What is the true cost of implementing six-sigma in your organisation? by Mark Rewhorn
Entry date: 170308
Firstly, I must declare an interest here. I’m a trained and certified six-sigma black-belt, who delivers six-sigma training for a living. I have also delivered several financially successful projects. I do truly believe in the methodology that six-sigma advocates. I also honestly believe that when used for customer derived issues six-sigma delivers its true promise. What I’m not so happy about though, is the way that companies deploying six-sigma are attributing the cost benefits achieved.
I have just found an article on the internet with headlines stating that Motorola have saved $2.2 billion over 2-3 years and Polaroid have saved $100m over one year with the sub heading, “These statistics demonstrate the dramatic impact Six Sigma can have in improving business performance.” I have no wish to single these companies out, and many other companies make similar claims, but are these headlines completely truthful? As a six-sigma trainer, I teach how important that the accuracy and taking realistic and appropriate measures are. Are these companies revealing the whole truth with the figures they are citing? Are their measures correct, transparent and will they stand scrutiny?
Let me say here and now, that I am in no doubt that these companies have actually achieved the savings trumpeted, but what I do question are the “hidden” costs that appear not to be taken into account by many of the companies deploying six-sigma. It appears that “cherry picking” is going on, with the good news being broadcast, and then finding its way into the corporate brochures. OK, there might be a value to be had here, and nobody wants to hear bad news, but after the recent scandals with accounting practices, isn’t it time to come clean?
For instance, what has happened to all the training and equipment costs; where and how have these been absorbed? When I talk about training costs, I’m not just talking about training the belts themselves, but what about champion training and general company awareness training? And during training we’re not just talking about the cost of employing trainers, (certainly not cheap) but what about the cost of the employees’ time, and the fact that they’re not productive during training? Also, in my experience, companies deploying six-sigma purchase nice new laptop computers and expensive, dedicated software. Where are these costs shown, how are they amortised? How are the now trained belts accounted for? Are they seen as a central resource and funded that way, or are they still funded by their previous departments? If the latter is the case, do they work on the company’s true ills, or only on the ones that affect their home department?
Next, there’s the argument about back filling the positions left vacant by the selected and now full time belts. Does this ever get taken into account? If it does I haven’t seen it. In fact one of my arguments over the years has been that companies usually can’t afford to back fill. Whether back filling takes place or not, the point is that there is a need for the work previously carried out by the newly appointed belts to be carried out by others. How is this accounted for? Whichever way it’s looked at, there is a cost burden.
What about the cost of changes to company procedures? Many six-sigma projects require procedures or process steps changing; these rarely appear to be accounted for. To change a procedure costs money, but if a factory layout needs changing to accommodate changed process steps it can incur significant cost. Six-sigma requires accurate data collecting; I have yet to see a company make the cost for this apparent. Often, existing measurement procedures or equipment are inadequate (or non existent) and need changing or updating. These costs need to be taken into account and reflected in individual project costs or as a capital expenditure against the company infrastructure itself. Designs of experiments don’t come for free, but again, I haven’t seen them accounted for. What happens to items that need reworking after the DoE? How is this accounted for? There are many more instances that I could go on about, but I guess you get the gist? It appears to me, we are hiding some of the costs.
Then of course there are the projects that are actually carried out. If six-sigma hadn’t been employed, would they still have been done? Is it right to claim all projects since the deployment as being directly attributable to the six-sigma methodology? Would expensive warranty based projects really not have been tackled if six-sigma hadn’t have been taken on board? How many of these projects were already underway before the six-sigma deployment was started, and then just ended-up embroiled within the euphoria of first project realisation?
How many projects are started and then for various reasons abandoned? What happens to account for the time and effort expended on these aborted projects? Equally, how many projects end up costing money in order to improve the customer experience?
The bottom line is that I think we’re being more than a touch hypocritical. Trained six-sigma belts are required to detail the costs of their projects; usually, with a financial analyst, and often they are required to put a value on intangibles such as customer satisfaction. However, the organisation as a whole doesn’t appear to feel the need to detail the true cost of deployment. This begs the obvious question, “What (if anything) is there to hide?” Or is it simply a case of an organisation not being able, or not wanting, to actually identify its true cost. Might it be deemed a commercial secret? Companies obviously don’t want to publicise the rates that they are paying their trained belts, but what does it cost to retain a now highly marketable person?
Let me throw down a challenge to any organisation that has fully embraced six-sigma and its methodologies. How about getting one of your highly trained black belts to carry out a project on the true cost of implementation to the organisation? Isn’t it about time we had an open and honest balance sheet? Or is this seen as a non value added action?
About the author:
This article is submitted by Mark Rewhorn, European Business Improvements founder and Contributor. You can reach Mark by clicking the link below:
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